Witnesses of the incident told police that Skalla was the only one "to throw punches" which escalated the argument to a physical attack.

Police said Skalla left the park with his family after the assault, in a vehicle which was photographed by a witness. The photograph helped lead police to the vehicle, which was owned by Skalla's girlfriend, who was not identified in the release.

Police said Skalla told his girlfriend that he "blacked out" during the incident.

Shearer was hit four times in the face and head eventually fell to the ground, prosecutors said. Shearer was being treated at Penn State Hershey Medical Center all week, but died at the hospital around 2:20 p.m. Friday.